Revert r330897:

This was intended to be a non-functional change. It wasn't. The commit
message was thus wrong. In addition it broke arm, and merged crypto
related code.

Revert with prejudice.

This revert skips files touched in r316370 since that commit was since
MFCed. This revert also skips files that require $FreeBSD$ property
changes.

Thank you to those who helped me get out of this mess including but not
limited to gonzo, kevans, rgrimes.

Requested by: gjb (re)

Partial merge of the SPDX changes

These changes are incomplete but are making it difficult
to determine what other changes can/should be merged.

No objections from: pfg

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Revert most part of 200420 as requested, as more review and polish is
needed.

Remove unneeded header includes from usr.bin/ except contributed code.

Tested with: make universe

Per letter dated July 22, 1999 remove 3rd clause of Berkeley derived
software (original contributor).

Reviewed by: imp

Make the 'y' (translate) command aware of multibyte characters.

ANSIfy

Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.

Silence WARNS=4 by passing a non-const buffer to regerror(). Since it
doesn't actually use the buffer when errbuf_size == 0, pass NULL.

WARNS=2 partial fix; use NO_WERROR to protect against some hard-to-fix warnings.

Use __FBSDID(), kill register keyword.

Expand xmalloc in-place, along with xrealloc; which wasn't even ANSI in its
implementation.

$Id$ -> $FreeBSD$

Remove local redefinition for err(). Add usage().

This commit was generated by cvs2svn to compensate for changes in r1590,
which included commits to RCS files with non-trunk default branches.

BSD 4.4 Lite Usr.bin Sources